package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.DishDTO;
import com.sky.dto.DishPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.DishFlavor;
import com.sky.entity.Setmeal;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.DishFlavorMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.ArrayList;
import java.util.List;

@Service
@Slf4j
public class DishServiceImpl implements DishService {

    @Autowired
    private DishMapper dishMapper;

    @Autowired
    private SetmealMapper setmealMapper;

    @Autowired
    private SetmealDishMapper setmealDishMapper;

    @Autowired
    private DishFlavorMapper dishFlavorMapper;

    /**
     * @Description : 新增菜品
     *  * @param dishDTO
     * @Return :
     */
    @Override
    @Transactional
    public void saveWithFlavor(DishDTO dishDTO) {
        Dish dish =new Dish();
        BeanUtils.copyProperties(dishDTO,dish);
        dishMapper.insert(dish);

        Long id = dish.getId();
        List<DishFlavor> flavors = dishDTO.getFlavors();
        if (flavors != null && flavors.size()>0) {
            flavors.forEach(dishFlavor -> {
                dishFlavor.setDishId(id);
            });
            dishFlavorMapper.insertBatch(flavors);
        }
    }

    /**
     * @return
     * @Description : 分页查询菜品数据
     * * @param dishPageQueryDTO
     * @Return : com.sky.result.Result
     */
    @Override
    public PageResult page(DishPageQueryDTO dishPageQueryDTO) {
        PageHelper.startPage(dishPageQueryDTO.getPage(),dishPageQueryDTO.getPageSize());
        Page<DishVO> page =dishMapper.dishQuery(dishPageQueryDTO);
        return new PageResult(page.getTotal(), page.getResult());
    }

    /**
     * @Description : 菜品删除
     *  * @param ids
     * @Return : com.sky.result.Result
     */
    @Override
    @Transactional
    public void deleteBatch(List<Long> ids) {
        for (Long id : ids) {
            Dish dish=dishMapper.getById(id);
            if(dish.getStatus() == StatusConstant.ENABLE){
                throw new DeletionNotAllowedException(MessageConstant.DISH_ON_SALE);
            }
        }
        List<Long> setmealIds = setmealDishMapper.getSetmealIdsByDishIds(ids);
        if (setmealIds != null && setmealIds.size() > 0) {
            throw new DeletionNotAllowedException(MessageConstant.DISH_BE_RELATED_BY_SETMEAL);
        }

        for (Long id : ids) {
            dishMapper.deleteById(id);
            dishFlavorMapper.deleteByDishId(id);
        }

/*        log.info("Dish Deleted with ids: " + ids);
        dishMapper.deleteBatchByIds(ids);
        log.info("Dish Deleted");
        dishFlavorMapper.deleteBatchByDishIds(ids);
        log.info("DishFlavor Deleted");*/

    }

    /**
     * @Description : 根据id查询菜品
     *  * @param id
     * @Return : com.sky.result.Result<com.sky.vo.DishVO>
     */
    @Override
    public DishVO getByIdWithFlavor(Long id) {
        Dish dish = dishMapper.getById(id);
        DishVO dishVO =new DishVO();
        BeanUtils.copyProperties(dish,dishVO);
        List<DishFlavor> dishFlavors = dishFlavorMapper.getByDishId(id);
        dishVO.setFlavors(dishFlavors);
        return dishVO;
    }

    /**
     * @Description : 修改菜品
     *  * @param dishDTO
     * @Return : com.sky.result.Result
     */
    @Override
    public void updateWithFlavor(DishDTO dishDTO) {
        Dish dish =new Dish();
        BeanUtils.copyProperties(dishDTO,dish);
        dishMapper.update(dish);
        dishFlavorMapper.deleteByDishId(dishDTO.getId());
        List<DishFlavor> flavors = dishDTO.getFlavors();
        if (flavors != null && flavors.size()>0) {
            flavors.forEach(dishFlavor -> {
                dishFlavor.setDishId(dishDTO.getId());
            });
            dishFlavorMapper.insertBatch(flavors);
        }
    }
    /**
     * @Description : 起售停售菜品
     *  * @param status
     * @param id
     * @Return : com.sky.result.Result
     */
    @Override
    public void startOrStop(Long id, int status) {
        Dish dish = dishMapper.getById(id);
        dish.setStatus(status);
        dishMapper.update(dish);
        if(status==StatusConstant.DISABLE){
            List<Long> ids = new ArrayList<Long>();
            ids.add(id);
            List<Long> setmealIdsByDishIds = setmealDishMapper.getSetmealIdsByDishIds(ids);
            if (setmealIdsByDishIds != null && setmealIdsByDishIds.size()>0) {
                for (Long setmealIdsByDishId : setmealIdsByDishIds) {
                    Setmeal setmeal = new Setmeal();
                    setmeal.setId(setmealIdsByDishId);
                    setmeal.setStatus(StatusConstant.DISABLE);
                    setmealMapper.update(setmeal);
                }
            }

        }
    }
    /**
     * @return
     * @Description : 套餐中添加菜品时回显
     * * @param categoryId
     * @Return : com.sky.result.Result
     */
    @Override
    public List<Dish> getDishesByCategoryId(Long categoryId) {
        Dish dish = Dish.builder()
                .categoryId(categoryId)
                .status(StatusConstant.ENABLE)
                .build();
        return dishMapper.list(dish);
    }

    /**
     * 条件查询菜品和口味
     * @param dish
     * @return
     */
    public List<DishVO> listWithFlavor(Dish dish) {
        List<Dish> dishList = dishMapper.list(dish);

        List<DishVO> dishVOList = new ArrayList<>();

        for (Dish d : dishList) {
            DishVO dishVO = new DishVO();
            BeanUtils.copyProperties(d,dishVO);

            //根据菜品id查询对应的口味
            List<DishFlavor> flavors = dishFlavorMapper.getByDishId(d.getId());

            dishVO.setFlavors(flavors);
            dishVOList.add(dishVO);
        }

        return dishVOList;
    }
}
